AC300 vs Apex 300: Which is Right for You?

While the AC300 has been a popular choice for the past two years, the Apex 300 is BLUETTI’s latest release, designed as an all-in-one upgrade that answers many of the limitations of its predecessor. In this guide, we’ll break down the key differences between the two models, from design and scalability to real-world performance, so you can make an informed decision about your next energy solution.

AC300 vs Apex 300: What’s the Real Difference in Design?

If you’re comparing the AC300 vs Apex 300, one of the first things you’ll notice is how different they feel right out of the box.

The Apex 300 is a true all-in-one system. It already has the inverter and the battery inside, so you don’t need to buy or connect anything else to get it working. Plug it in, and it’s ready. This makes it simpler for people who want a compact backup for their home, or something they can take in their RV without extra cables and boxes.

The AC300, on the other hand, is a modular design. That means it’s basically an inverter that only works once you connect external batteries like the B300. Some people like this because it lets them expand in a very custom way, but it also means the setup is bulkier, heavier, and more complicated.

AC300 vs Apex 300: Which One Gives You More Power and Runtime?

When people compare the AC300 vs Apex 300, the next big question is: “Which one can actually power more stuff, and for longer?”

The Apex 300 is clearly the stronger option here. On its own, it delivers 3,840W of output, compared to the AC300’s 3,000W. That extra wattage matters when you’re running heavy-duty appliances like air conditioners, heaters, or power tools. Plus, the Apex 300 supports both 120V and 240V output, meaning it can handle standard home devices as well as larger household equipment like electric stoves or water heaters.

For storage, the AC300 maxes out at about 12.3 kWh when paired with 4 B300 batteries. The Apex 300 scales much higher — up to 19.4 kWh per unit when connected with 6 B300K batteries. And if you link three Apex 300 units, you can reach 58 kWh of energy and over 11.5 kW of output power. That’s enough to keep a whole house running during extended outages or fully support an off-grid lifestyle.

AC300 vs Apex 300: Which One Fits Your Lifestyle?

Home Backup

If you’re thinking about keeping the lights on during a blackout, the Apex 300 is usually the better fit. It’s compact, supports both 120V and 240V, and can scale up to nearly 20 kWh with batteries. That’s enough to run essentials like your fridge, lights, internet, and even heavier appliances like an electric stove or water heater for more than a day.

The AC300 can also back up your home, but it’s bulkier and maxes out at around 12 kWh. That may be fine for shorter outages, but it gives you less headroom if you want to run bigger appliances or last through longer blackouts.

RVs and Outdoor Living

For RVers or campers, the Apex 300 again has the edge. Its all-in-one build is easier to bring on the road, and dual-voltage output means you can power both RV appliances and higher-wattage gear like electric grills. Add solar panels, and you can recharge directly while you’re parked off-grid.

The AC300 does have RV-specific ports (TT-30 and 12V DC), which some RV users may prefer, but the unit itself is heavier and less portable.

Off-Grid and Solar Living

If you’re going fully off-grid, the Apex 300 scales much further. With multiple units, you can reach 58 kWh of storage and over 11.5 kW of output — enough for a cabin, workshop, or even a small household to run independently.

The AC300 can also work off-grid, but it’s more limited in both capacity and flexibility. It’s better suited for smaller off-grid setups rather than long-term independence.

Bottom line: If portability, higher power, and scalability matter most, the Apex 300 fits better across nearly every scenario. The AC300 only makes sense if you already own B300 batteries or want its specific RV ports.

AC300 vs Apex 300: Which One Is Better Value for the Money?

A big part of the AC300 vs Apex 300 decision comes down to price. Nobody wants to overspend, but you also don’t want to buy a system that feels outdated too soon.

The AC300 is generally cheaper upfront, but remember: it’s just the inverter. To make it work, you need to add B300 batteries, which pushes the cost closer to an Apex 300 bundle. For users who already own B300s, the AC300 can still be a cost-effective choice.

The Apex 300, meanwhile, gives you more for a similar price point. You get:

• An all-in-one design (no extra batteries needed just to get started).
• Higher power output (3,840W vs 3,000W).
• Dual voltage support (120V + 240V).
• Greater scalability (up to 58 kWh with multiple units).
• Better efficiency, which can actually pay for itself over time by saving on electricity through solar integration and peak-load shifting.

So if your question is: “Which one gives me more for every dollar I spend?”

• The Apex 300 is the stronger investment for most people, especially if you’re buying new.
• The AC300 only makes sense if you already own compatible batteries or find it at a lower bundle price.

AC300 vs Apex 300: Who Should Choose Which?

If you’re still torn between the AC300 vs Apex 300, here’s the simple answer:

• Choose the Apex 300 if you want:
  • A compact, all-in-one power station that works straight out of the box.
  • Higher output (3,840W) and dual-voltage flexibility for both 120V and 240V appliances.
  • Larger capacity and scalability, up to 58 kWh with multiple units.
  • Faster charging and improved efficiency to get more usable runtime.
  • A future-proof system designed for home backup, RV travel, and off-grid living.
• Choose the AC300 if you want:
  • To reuse existing B300 batteries you already own.
  • A modular system that you don’t mind setting up with separate components.
  • Built-in RV ports (TT-30, 12V DC) and are okay with a bulkier system.

Conclusion: Which One Is the Better Choice?

When comparing AC300 vs Apex 300, both systems can power homes, RVs, and off-grid setups, but they approach it differently. The AC300 is a proven, modular option, while the Apex 300 represents BLUETTI’s next-generation vision: compact, scalable, and easier to use.

For most new buyers, the Apex 300 is the clear winner. It delivers more power, longer runtime, and greater flexibility at a similar overall cost. Whether you need reliable home backup, portable RV power, or a scalable off-grid system, the Apex 300 sets the new standard for portable energy storage.

If you want the most advanced and versatile option today, the Apex 300 is the one to choose.